This is a list of O-type stars by their distance from Earth.
| Star system←← | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|
| 440 ± 40 | 1 | O9.5 V | 2.56 – 2.58 | The closest O-type star to Earth. | |
| Zeta Puppis (Naos) | 1,080 ± 40 | 1 | O4If(n)p | 2.24 - 2.26 | |
| Gamma² Velorum (Suhail al Muhlif/Regor) | 2 | O7.5III | 1.83 | Has a Wolf-Rayet Companion. | |
| Mintaka A (Delta Orionis, 34 Orionis) | 1,200 | 3 | O9.5II | 2.5 | |
| Alnitak (Zeta Orionis, 50 Orionis) | 1,260 ± 180 | 3 | O9.5Iab | 1.77 | |
| Sigma Orionis A | 1263±4.3 | 2 | O9.5V | 4.07 | |
| Meissa A (Lambda Orionis) | 1260±200 | 1 | O8 III((f)) | 3.7 | |
| 1,320 ± 40 | 1 | O9.5V | 5.96 | ||
| Xi Persei (Menkib) | 1340±65 | 1 | O7.5III(n)((f)) | 4.04 | |
| 1340±65 | 1 | O6Vp | 5.13 | ||
| Iota Orionis (Haytsa) | 3 | O9 III | 2.77 | ||
| 1,800±103 | 1 | O9V | 4.880 | ||
| 1,894±111 | 1 | O9.5 V | 5.18 | ||
| 2000 | 1 | O6fp | It is the central star of NGC 6826 Planetary Nebula. | ||
| 2120.02 | 1 | sdO6p | 8.287 | ||
| 2,300 ± 200 | 1 | O7.5III(f) | 5.09 | ||
| S Monocerotis (15 Monocerotis) | 2,300 ± 200 | 3 | O7V((f))zvar[4] + O9.5Vn | ||
| 3098.5 | 1 | O6.5If(n)p | +5.050 | ||
| 3,260 | 1 | O9.7Iab | 4.91 | ||
| 3,600 | 1 | O7fp | It is the central star of IC 418 Planetary Nebula. | ||
| 3,800 | 2 | O7.5-8Iabf + O9.7Ib | 4.95 | ||
| 3,913.88 | 1 | O9Ib | 5.08 | ||
| 4100 ± 200 | 1 | O9.7V | 7.65 | ||
| 4100 ± 200 | 1 | O7.5III | |||
| 4,100 ± 400 | 1 | O4V((f))z | 5.97 | ||
| 4,200±650 | 1 | O9.7 Iab | 5.37 | ||
| HD 149404 (V918 Scorpii) | 4,300 ± 400 | 2 | O7.5I(f) + ON9.7I | 5.42 - 5.50 | |
| 5,120.66 | 3 | O9II | 4.40 | ||
| 4U 1700-37 (V884 Scorpii) | 5,200 ± 200 | 1 | O6Iafcp | 6.51 | |
| Plaskett's Star (V640 Monocerotis) | 5,245 | 2 | O8I + O7.5III | 6.06 | |
| 5,400 ± 200 | 1 | O6If + O5.5III(f) | 9.06 | ||
| 5,400 ± 300 | 1 | O4If | 10.06 | ||
| 6,000 | 1 | O9Ia | 4.29 | ||
| WR 133 (V1676 Cyg) | 6,100 ± 300 | 2 | O9I | 6.75 - 6.84 | Has a Wolf-Rayet Companion. |
| 6,500 | 1 | O(H)6f | It is the central star of NGC 2392 Planetary Nebula. | ||
| WR 25 (HD 93162) | 6,500 | 2 | O2.5If*/WN6 + OB | 8.80 | |
| Pismis 24-1 (HD 319718) | 6,500 | 2 | O3.5If*+O4III(f+) | ||
| HD 151804 (V973 Scorpii) | 7,000 | 1 | O8 Iaf | 5.22 - 5.28 | |
| 7175.44 | 1 | O8(f)ep | It is the central star of Hen 2-131 Planetary Nebula. | ||
| 7,300 ± 200 | 2 | O9.7Iab | 8.95 | ||
| 7,400 | 4 | O6/7V + O9.5/B0Iab+O9III | 5.53 | Has a Wolf-Rayet Companion. | |
| Eta Carinae (Eta Argus) | 7,500 | 2 | O | −1.0 to ~7.6 | part of Trumpler 16 in the Carina Nebula. |
| 7,501.6 | 1 | O2If*+O3.5 V((f))z | 6.90 | ||
| QZ Carinae (HD 93206) | 7,501.6 | 4 | O9.7I+O8III+O9V | 6.24 | |
| HD 93205 (V560 Carinae) | 7,600 ± 400 | 2 | O3.5Vf + O8V | 7.75 | |
| LSS 4067 (CD−38°11748) | 9,500–12,700 | 1 | O4.5Ifpe | 11.44 | |
| 9,800 ± 400 | 1 | O6.5(f)(n)p | 8.67 | ||
| 10,000 | 1 | O5.5III(fc)var | 7.272 | ||
| 14,000 ± 1,000 | 2 | O3If*/WN6 + O3If*/WN6 | 13.28 | ||
| 20,000 | 1 | Ofpe/WN9 | |||
| 20,000 | 1 | O5 | |||
| 20,000 | 1 | O4I | 15.1 | ||
| Westerhout 51-57 | 20,000 | 1 | O4V | Member of Westerhout 51. | |
| 24,787.88 | 1 | O2If* | 14.72 | ||
| WR 42e (2MASS J11144550-115001) | 25,000 | 1 | O3If*/WN6 | 14.53 | |
| WR 102ka (Peony star) | 26,000 | 2 | Ofpe/WN9 | ||
| 36,200 | 1 | O2-3.5If* | |||
The Large Magellanic Cloud (LMC) is around 163 kly distant and the Small Magellanic Cloud (SMC) is around 204 kly distant
| Host galaxy | Star system | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|---|
| LMC | 163,000 | 1 | O4If | 13.24 | ||
| LMC | 163,000 | 2 | O3V + O5V | 13.13 | ||
| LMC | 163,000 | 1 | O2III(f*) | 12.22 | ||
| LMC | 163,000 | 1 | O2If* | 12.78 | ||
| LMC | 164,000 | 1 | O2V-III(n)((f*)) | 13.76 | ||
| LMC | 164,000 | 1 | O9:Vnnne | 15.806 | ||
| LMC | 164,000 | 1 | O | |||
| SMC | 197,000 | 2 | O6I(f) | 13.016 | ||
| SMC | 197,000 | 2 | O4V | 12.83 | ||
| SMC | 200,000 | 3 | LBV + WN4 + OI | 8.8 - 11.9 | ||
The Andromeda Galaxy (M31) is 2.5 Mly distant and the Triangulum Galaxy is around 3.2 Mly distant
| Host galaxy | Star system | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|---|
| Triangulum | 2,700,000 | 2 | O4Iab+O4Ia | |||
| Triangulum | M33-013406.63 (B416/UIT301) | 3,000,000 | 1 | O9.5Ia | ||